Virtual Memory Information

There are two types of memory, which are as follows:

* System Memory is a memory that is used to store the application data and instruction in order for the system to process and execute that application data and instruction. When you install the memory sticks to increase the system RAM, you are adding more system memory. System Memory can be known as either the physical memory or the main memory.

* Virtual Memory is a memory that uses a portion of HDD space as the memory to store the application data and instruction that the system deemed it doesn't need to process for now. Virtual Memory can be known as the logical memory, and it controls by the Operating System, which is Microsoft Windows. Adding the Virtual Memory can be done in system configuration.

Tutorial Information & Facts or Implementation

Virtual Memory is a HDD space that uses some portion of it as the memory. It is used to store application data and instruction that is currently not needed to be process by the system.

During the program loading process, the system will copy the application data and its instruction from the HDD into the main memory (system memory). Therefore the system can use its resources such as CPU to process and execute it. Once the system memory gets filled up, the system will start moving some of the data and instruction that don't need to process anymore into the Virtual Memory until those data and instruction need to process again. So the system can call the next application data and instruction and copy it into the main memory in order for the system to process the rest and load the program. When the data and instruction that is in the Virtual Memory needs to process again, the system will first check the main memory for its space. If there is space, it will simply swap those into the main memory. If there are not any space left for the main memory, the system will first check the main memory and move any data and instructions that doesn't need to be process into the Virtual Memory. And then swap the data and instruction that need to be process by the system from the Virtual Memory into the main memory.

Having too low of Virtual Memory size or large Virtual Memory size (meaning the size that is above double of the system memory) is not a good idea. If you set the Virtual Memory too low, then the OS will keep issuing an error message that states either Not enough memory or Virtual too low. This is because some portion of the system memory are used to store the OS Kernel, and it requires to be remain in the main memory all the time. Therefore the system needs to have a space to store the not currently needed process data and instruction when the main memory get filled up. If you set the Virtual Memory size too large to support the intensive application, it is also not a good idea. Because it will create the performance lagging, and even it will take the HDD free space. The system needs to transfer the application data and instruction back and forth between the Virtual Memory and the System Memory. Therefore, that is not a good idea. The ideal size for the Virtual Memory is the default size of Virtual Memory, and it should not be exceed the value of the triple size of system memory.

To determine how much virtual memory you need, since the user's system contains the different amount of RAM, it is based on the system. By default, the OS will set the appropriate size for Virtual Memory. The default and appropriate size of Virtual Memory is:

CODE
* 1.5 =
.

For example, if your system contains 256 MB of RAM, you should set 384 MB for Virtual Memory.

CODE
256 MB of RAM (Main Memory) * 1.5 = 384 MB for Virtual Memory


If you would like to determine how much the Virtual Memory is for your system and/or would like to configure and add more virtual memory, follow the procedure that is shown below. The following procedure is based on windows XP Professional.

1-1) Go to right-click My Computer and choose Properties

1-2) In the System Properties dialog box, go to Advanced tab

1-3) Click Settings button that is from the Performance frame

1-4) Once the Performance Options shows up on the screen, go to Advanced tab

1-5) Under the Advanced tab, click the Change button from the Virtual Memory frame to access to the Virtual Memory setting

Then the Virtual Memory dialog box appears on the screen. In there, you are able to check how much the Virtual Memory you set. If you would like to modify the size of Virtual Memory, follow the procedure that is shown below.

2-1) In there, select the drive letter that is used to install the Operating System

2-2) Choose the option that says, "Custom Size:"

Once you choose that option, the setting for Initial Size and Maximum Size become available for you to set. Initial Size (MB) means the actual size of Virtual Memory, and Maximum Size (MB) means the maximum size of Virtual Memory that is allowed to use.

Let's say if your system contains 512 MB of RAM, then the ideal setting for the Virtual Memory is as follows:

CODE

Initial Size (MB): 768
Maximum Size (MB): 1500


Once you are happy with that Virtual Memory size, click the Set button from Paging file size for selected drive to apply the setting for the Virtual Memory size. Then click the OK button to apply the setting.

That's where you can manage and configure for the size of Virtual Memory.


Additional Information

* To maintain the good overall system performance, you should be using the default size of actual size for Virtual Memory and the triple the value of the size of the main memory for the maximum size of Virtual Memory. If you find that main memory plus virtual memory is not big enough to load the intensive application, then you will need to add more main memory onto your system.


Thank you

Keep Files Private

Keep Files Private

• If you want to encrypt the contents of an individual file or directory, Windows XP Pro will do the trick, provided you enable NTFS on your hard drive. To encrypt a file, right-click on it to bring up the Properties window. Click on the Advanced button, then in the Advanced Attributes dialog box click on Encrypt contents to secure data. This will encrypt the file (using either DES, which employs a 56-bit key on each 64-bit block of data, or 3DES, which uses a 56-bit key three times on each 64-bit block of data), and it will provide a certificate just for you. This certificate is key; if you reinstall Windows or otherwise lose your user account, your access to the encrypted files will be gone, too. You need to export your certificates to back them up: For detailed instructions, search on export certificate in Windows Help.

• Windows XP does not require you to enter your password when you open the encrypted file. Once you log on to a session, encrypted files are available for you—and anyone who walks up to your system—to view.

• Windows XP Home doesn't support this method. Both XP Home and XP Pro, however, let you create password-protected compressed files. To do this, right-click on the desired file and choose Send To | Compressed (zipped) Folder. Open the resulting folder and select Add a Password from the File menu; delete the original file. Note that this encryption is relatively weak. It should dissuade casual users but won't put up much of a fight against someone determined to hack it apart.

Wireless Networking

Wireless Networking

• What is wireless networking?

The term wireless networking refers to technology that enables two or more computers to communicate using standard network protocols, but without network cabling. Strictly speaking, any technology that does this could be called wireless networking. The current buzzword however generally refers to wireless LANs. This technology, fuelled by the emergence of cross-vendor industry standards such as IEEE 802.11, has produced a number of affordable wireless solutions that are growing in popularity with business and schools as well as sophisticated applications where network wiring is impossible, such as in warehousing or point-of-sale handheld equipment.

• What is a wireless network made up of?

There are two kinds of wireless networks:

a. An ad-hoc, or peer-to-peer wireless network consists of a number of computers each equipped with a wireless networking interface card. Each computer can communicate directly with all of the other wireless enabled computers. They can share files and printers this way, but may not be able to access wired LAN resources, unless one of the computers acts as a bridge to the wired LAN using special software. (This is called"bridging")

b. A wireless network can also use an access point, or base station. In this type of network the access point acts like a hub, providing connectivity for the wireless computers. It can connect (or "bridge") the wireless LAN to a wired LAN, allowing wireless computer access to LAN resources, such as file servers or existing Internet Connectivity.

There are two types of access points:

i. Dedicated hardware access points (HAP) such as Lucent's WaveLAN, Apple's Airport Base Station or WebGear's AviatorPRO.Hardware access points offer comprehensive support of most wireless features, but check your requirements carefully.

ii. Software Access Points which run on a computer equipped with a wireless network interface card as used in an ad-hoc or peer-to-peer wireless network. The Vicomsoft Internet Gateway suites are software routers that can be used as a basic Software Access Point, and include features not commonly found in hardware solutions, such as Direct PPPoE support and extensive configuration flexibility, but may not offer the full range of wireless features defined in the 802.11 standard.With appropriate networking software support, users on the wireless LAN can share files and printers located on the wired LAN and vice versa. Vicomsoft's solutions support file sharing using TCP/IP.

• What is IEEE 802.11?

Wireless networking hardware requires the use of underlying technology that deals with radio frequencies as well as data transmission. The most widely used standard is 802.11 produced by the Institute of Electrical and Electronic Engineers (IEEE). This is a standard defining all aspects of Radio Frequency Wireless networking.

• Can I mix wireless equipment from different vendors?

Because most wireless networking hardware vendors support the 802.11 standard they can inter operate. However, we recommend verification as the standard is a fairly recent one, and does specify two different methods for wireless communications; Frequency Hopping (FH) and Direct Sequence Spread Spectrum (DSSS or DS), which are not interoperable.When purchasing wireless networking hardware from separate vendors be sure to obtain guarantees from the vendors that the hardware will interoperate and follows the standards.Within a short time we expect all new wireless cards, like ethernet cards, to become inexpensive, ubiquitous and totally interoperable.Also of note is that the latest version of the standard defines 11mbps and 5.5mbps
networking, with support for the older standard 1mbps and 2mbps speeds. This provides some compatibility with different or older equipment. Note that this new standard covers DS-type Networks, not FH types.Software access points such as the Internet Gateway which uses the wireless interface of the host computer should have no compatibility issues with third party wireless hardware, as long as standards are followed. Typically wireless hardware is identified
to the software as a network interface, and therefore can be used in the same way as any other network card.

• 5. If my computer is connected to a wireless LAN, can it communicate with computers on a wired LAN as well?
  

To do this you will need some sort of bridge between the wireless and wired network. This can be accomplished either with a hardware access point or a software access point. Hardware access points are available with various types of network interfaces, such as Ethernet or Token Ring, but typically require extra hardware to be purchased if your networking requirements change.
If networking requirements go beyond just interconnecting a wired network network to a small wireless network, a software access point may be the best solution.A software access point does not limit the type or number of network interfaces you use.It may also allow considerable flexibility in providing access to different network types, such as different types of Ethernet, Wireless and Token Ring networks. Such connections are only limited by the number of slots or interfaces in the computer used for this task.Further to this the software access point may include significant additional features such as shared Internet access, web caching or content filtering, providing significant benefits to users and administrators.

• What is the range of a wireless network?

Each access point has a finite range within which a wireless connection can be maintained between the client computer and the access point. The actual distance varies depending upon the environment; manufacturers typically state both indoor and outdoor ranges to give a reasonable indication of reliable performance. Also it should be noted that when operating at the limits of range the performance may drop, as the quality of connection deteriorates and the system compensates.Typical indoor ranges are 150-300 feet, but can be shorter if the building construction interferes with radio transmissions. Longer ranges are possible, but performance willdegrade with distance.Outdoor ranges are quoted up to 1000 feet, but again this depends upon the environment.There are ways to extend the basic operating range of Wireless communications, by using more than a single access point or using a wireless relay /extension point.

• How many wireless networked computers can use a single access point?

This depends upon the manufacturer. Some hardware access points have a recommended limit of 10, with other more expensive access points supporting up to 100 wireless connections. Using more computers than recommended will cause performance and reliability to suffer.Software access points may also impose user limitations, but this depends upon the specific software, and the host computer's ability to process the required information.

• Can I have more than one access point?

Yes, multiple access points can be connected to a wired LAN, or sometimes even to a second wireless LAN if the access point supports this.In most cases, separate access points are interconnected via a wired LAN, providing wireless connectivity in specific areas such as offices or classrooms, but connected to a main wired LAN for access to network resources, such as file servers If a single area is too large to be covered by a single access point, then multiple access points or extension points can be used. -- Note that an "extension point" is not defined in the wireless standard, but have been developed by some manufacturers. When using multiple access points, each access point wireless area should overlap its neighbors. This provides a seamless area for users to move around in using a feature called "roaming. " (See the next question for an explanation of Roaming)Some manufacturers produce extension points, which act as wireless relays, extending the range of a single access point. Multiple extension points can be strung together to provide wireless access to far away locations from the central access point. Wireless
connected computers using an Access Point with an Extension Point.

• What is Roaming?

A wireless computer can "roam" from one access point to another, with the software and hardware maintaining a steady network connection by monitoring the signal strength from in-range access points and locking on to the one with the best quality. Usually this is completely transparent to the user; they are not aware that a different access point is being used from area to area. Some access point configurations require security authentication when swapping access points, usually in the form of a password dialog box.

• Can I use a wireless network to interconnect two LANs?

Yes. Wireless networking offers a cost-effective solution to users with difficult physical installations such as campuses, hospitals or businesses with more than one location in immediate proximity but separated by public thoroughfare. This type of installation requires two access points. Each access point acts as a bridge or router connecting its own LAN to the wireless connection. The wireless connection allows the two access points to communicate with each other, and therefore interconnect the two LAN's.

• Is it true that wireless networking is only good for laptop computers?

Although wireless networking offers obvious benefits to users of laptops who move from location to location throughout the day, there are benefits for users of fixed position computers as well:
Many schools and businesses have unsuitable building layouts or walls that cannot be wired for various reasons making it difficult or impossible to build a wired network. Wireless networking in these environments is a very cost effective alternative also providing future flexibility.In cases where a small number of computers are separated from a main network a wireless link may be more cost effective than network cabling although the latter is perfectly feasible.Temporary wireless LANs can easily be created for exhibitions, school or business projects, all without any trailing cabling.

• What about security?

Wireless communications obviously provide potential security issues, as an intruder does not need physical access to the traditional wired network in order to gain access to data communications. However, 802.11 wireless communications cannot be received --much less decoded-- by simple scanners, short wave receivers etc. This has led to the common misconception that wireless communications cannot be eavesdropped at all. However, eavesdropping is possible using specialist equipment.To protect against any potential security issues, 802.11 wireless communications have a function called WEP (Wired Equivalent Privacy), a form of encryption which provides privacy comparable to that of a traditional wired network. If the wireless network has information that should be secure then WEP should be used, ensuring the data is protected at traditional wired network levels.Also it should be noted that traditional Virtual Private Networking (VPN) techniques will work over wireless networks in the same way as traditional wired networks.

Command Prompt Commands

Command Prompt:

ANSI.SYS Defines functions that change display graphics, control cursor movement, and reassign keys.
APPEND Causes MS-DOS to look in other directories when editing a file or running a command.
ARP Displays, adds, and removes arp information from network devices.
ASSIGN Assign a drive letter to an alternate letter.
ASSOC View the file associations.
AT Schedule a time to execute commands or programs.
ATMADM Lists connections and addresses seen by Windows ATM call manager.
ATTRIB Display and change file attributes.
BATCH Recovery console command that executes a series of commands in a file.
BOOTCFG Recovery console command that allows a user to view, modify, and rebuild the boot.ini
BREAK Enable / disable CTRL + C feature.
CACLS View and modify file ACL's.
CALL Calls a batch file from another batch file.
CD Changes directories.
CHCP Supplement the International keyboard and character set information.
CHDIR Changes directories.
CHKDSK Check the hard disk drive running FAT for errors.
CHKNTFS Check the hard disk drive running NTFS for errors.
CHOICE Specify a listing of multiple options within a batch file.
CLS Clears the screen.
CMD Opens the command interpreter.
COLOR Easily change the foreground and background color of the MS-DOS window.
COMP Compares files.
COMPACT Compresses and uncompress files.
CONTROL Open control panel icons from the MS-DOS prompt.
CONVERT Convert FAT to NTFS.
COPY Copy one or more files to an alternate location.
CTTY Change the computers input/output devices.
DATE View or change the systems date.
DEBUG Debug utility to create assembly programs to modify hardware settings.
DEFRAG Re-arrange the hard disk drive to help with loading programs.
DEL Deletes one or more files.
DELETE Recovery console command that deletes a file.
DELTREE Deletes one or more files and/or directories.
DIR List the contents of one or more directory.
DISABLE Recovery console command that disables Windows system services or drivers.
DISKCOMP Compare a disk with another disk.
DISKCOPY Copy the contents of one disk and place them on another disk.
DOSKEY Command to view and execute commands that have been run in the past.
DOSSHELL A GUI to help with early MS-DOS users.
DRIVPARM Enables overwrite of original device drivers.
ECHO Displays messages and enables and disables echo.
EDIT View and edit files.
EDLIN View and edit files.
EMM386 Load extended Memory Manager.
ENABLE Recovery console command to enable a disable service or driver.
ENDLOCAL Stops the localization of the environment changes enabled by the setlocal command.
ERASE Erase files from computer.
EXIT Exit from the command interpreter.
EXPAND Expand a M*cros*ft Windows file back to it's original format.
EXTRACT Extract files from the M*cros*ft Windows cabinets.
FASTHELP Displays a listing of MS-DOS commands and information about them.
FC Compare files.
FDISK Utility used to create partitions on the hard disk drive.
FIND Search for text within a file.
FINDSTR Searches for a string of text within a file.
FIXBOOT Writes a new boot sector.
FIXMBR Writes a new boot record to a disk drive.
FOR Boolean used in batch files.
FORMAT Command to erase and prepare a disk drive.
FTP Command to connect and operate on a FTP server.
FTYPE Displays or modifies file types used in file extension associations.
GOTO Moves a batch file to a specific label or location.
GRAFTABL Show extended characters in graphics mode.
HELP Display a listing of commands and brief explanation.
IF Allows for batch files to perform conditional processing.
IFSHLP.SYS 32-bit file manager.
IPCONFIG Network command to view network adapter settings and assigned values.
KEYB Change layout of keyboard.
LABEL Change the label of a disk drive.
LH Load a device driver in to high memory.
LISTSVC Recovery console command that displays the services and drivers.
LOADFIX Load a program above the first 64k.
LOADHIGH Load a device driver in to high memory.
LOCK Lock the hard disk drive.
LOGON Recovery console command to list installations and enable administrator login.
MAP Displays the device name of a drive.
MD Command to create a new directory.
MEM Display memory on system.
MKDIR Command to create a new directory.
MODE Modify the port or display settings.
MORE Display one page at a time.
MOVE Move one or more files from one directory to another directory.
MSAV Early M*cros*ft Virus scanner.
MSD Diagnostics utility.
MSCDEX Utility used to load and provide access to the CD-ROM.
NBTSTAT Displays protocol statistics and current TCP/IP connections using NBT
NET Update, fix, or view the network or network settings
NETSH Configure dynamic and static network information from MS-DOS.
NETSTAT Display the TCP/IP network protocol statistics and information.
NLSFUNC Load country specific information.
NSLOOKUP Look up an IP address of a domain or host on a network.
PATH View and modify the computers path location.
PATHPING View and locate locations of network latency.
PAUSE Command used in batch files to stop the processing of a command.
PING Test / send information to another network computer or network device.
POPD Changes to the directory or network path stored by the pushd command.
POWER Conserve power with computer portables.
PRINT Prints data to a printer port.
PROMPT View and change the MS-DOS prompt.
PUSHD Stores a directory or network path in memory so it can be returned to at any time.
QBASIC Open the QBasic.
RD Removes an empty directory.
REN Renames a file or directory.
RENAME Renames a file or directory.
RMDIR Removes an empty directory.
ROUTE View and configure windows network route tables.
RUNAS Enables a user to execute a program on another computer.
SCANDISK Run the scandisk utility.
SCANREG Scan registry and recover registry from errors.
SET Change one variable or string to another.
SETLOCAL Enables local environments to be changed without affecting anything else.
SETVER Change MS-DOS version to trick older MS-DOS programs.
SHARE Installs support for file sharing and locking capabilities.
SHIFT Changes the position of replaceable parameters in a batch program.
SHUTDOWN Shutdown the computer from the MS-DOS prompt.
SMARTDRV Create a disk cache in conventional memory or extended memory.
SORT Sorts the input and displays the output to the screen.
START Start a separate window in Windows from the MS-DOS prompt.
SUBST Substitute a folder on your computer for another drive letter.
SWITCHES Remove add functions from MS-DOS.
SYS Transfer system files to disk drive.
TELNET Telnet to another computer / device from the prompt.
TIME View or modify the system time.
TITLE Change the title of their MS-DOS window.
TRACERT Visually view a network packets route across a network.
TREE View a visual tree of the hard disk drive.
TYPE Display the contents of a file.
UNDELETE Undelete a file that has been deleted.
UNFORMAT Unformat a hard disk drive.
UNLOCK Unlock a disk drive.
VER Display the version information.
VERIFY Enables or disables the feature to determine if files have been written properly.
VOL Displays the volume information about the designated drive.
XCOPY Copy multiple files, directories, and/or drives from one location to another.
TRUENAME When placed before a file, will display the whole directory in which it exists
TASKKILL It allows you to kill those unneeded or locked up applications

Windows Shortcuts

Run Commands:
compmgmt.msc - Computer management
devmgmt.msc - Device manager
diskmgmt.msc - Disk management
dfrg.msc - Disk defrag
eventvwr.msc - Event viewer
fsmgmt.msc - Shared folders
gpedit.msc - Group policies
lusrmgr.msc - Local users and groups
perfmon.msc - Performance monitor
rsop.msc - Resultant set of policies
secpol.msc - Local security settings
services.msc - Various Services
msconfig - System Configuration Utility
regedit - Registry Editor
msinfo32 _ System Information
sysedit _ System Edit
win.ini _ windows loading information(also system.ini)
winver _ Shows current version of windows
mailto: _ Opens default email client
command _ Opens command prompt


Run Commands to access the control panel:
Add/Remove Programs control appwiz.cpl
Date/Time Properties control timedate.cpl
Display Properties control desk.cpl
FindFast control findfast.cpl
Fonts Folder control fonts
Internet Properties control inetcpl.cpl
Keyboard Properties control main.cpl keyboard
Mouse Properties control main.cpl
Multimedia Properties control mmsys.cpl
Network Properties control netcpl.cpl
Password Properties control password.cpl
Printers Folder control printers
Sound Properties control mmsys.cpl sounds
System Properties control sysdm.cpl

Windows XP Shortcuts:
ALT+- (ALT+hyphen) Displays the Multiple Document Interface (MDI) child window's System menu
ALT+ENTER View properties for the selected item
ALT+ESC Cycle through items in the order they were opened
ALT+F4 Close the active item, or quit the active program
ALT+SPACEBAR Display the System menu for the active window
ALT+TAB Switch between open items
ALT+Underlined letter Display the corresponding menu
BACKSPACE View the folder one level up in My Computer or Windows Explorer
CTRL+A Select all
CTRL+B Bold
CTRL+C Copy
CTRL+I Italics
CTRL+O Open an item
CTRL+U Underline
CTRL+V Paste
CTRL+X Cut
CTRL+Z Undo
CTRL+F4 Close the active document
CTRL while dragging Copy selected item
CTRL+SHIFT while dragging Create shortcut to selected iteM
CTRL+RIGHT ARROW Move the insertion point to the beginning of the next word
CTRL+LEFT ARROW Move the insertion point to the beginning of the previous word
CTRL+DOWN ARROW Move the insertion point to the beginning of the next paragraph
CTRL+UP ARROW Move the insertion point to the beginning of the previous paragraph
SHIFT+DELETE Delete selected item permanently without placing the item in the Recycle Bin
ESC Cancel the current task
F1 Displays Help
F2 Rename selected item
F3 Search for a file or folder
F4 Display the Address bar list in My Computer or Windows Explorer
F5 Refresh the active window
F6 Cycle through screen elements in a window or on the desktop
F10 Activate the menu bar in the active program
SHIFT+F10 Display the shortcut menu for the selected item
CTRL+ESC Display the Start menu
SHIFT+CTRL+ESC Launches Task Manager
SHIFT when you insert a CD Prevent the CD from automatically playing
WIN Display or hide the Start menu
WIN+BREAK Display the System Properties dialog box
WIN+D Minimizes all Windows and shows the Desktop
WIN+E Open Windows Explorer
WIN+F Search for a file or folder
WIN+F+CTRL Search for computers
WIN+L Locks the desktop
WIN+M Minimize or restore all windows
WIN+R Open the Run dialog box
WIN+TAB Switch between open items

Securing WinXP Pro

Securing WinXP Pro

* NTFS Partition.

Be sure to install XP onto an NTFS partition so that you (the admin) can take advantage
of file permissions. You want this option so that "you" can decide who reads, writes,
executes what files.

If you didnt install XP onto an NTFS partition. Convert It. To convert to NTFS follow
the instructions below.

Open a command prompt and type "convert c: /FT:NTFS /v"

This command will convert your c: partition from FAT to NTFS in verbose mode.


* Disable Error Reporting

Disable Error Reporting - we dont want microsoft to know every time or error.
especially if we didnt pay for winxp.
control panel >> performance and maintenance >> system >> advanced >> error reporting
(disable all)

right click "my computer" >> manage >> services and applications >> services >> " stop
and disable" Error Reporting.


* Disable Automatic Updates

NOTE: DO THIS ONLY IF YOUR COPY OF XP IS PIRATED!! I suggest "auto update" if your copy
of XP is legal. If your copy is pirated then i suggest that you stay updated with
the latest fixes and patches manually.

control panel >> performance and maintenance >> system >> automatic updates
(disable updates)

right click "my computer" >> manage >> services and applications >> services >> " stop
and disable" Automatic Updates.

* Disable "Recent Documents" Viewed

Quit listing most recent documents opened under the start button - Dont want the
girlfriend or the parents to find that pr0n you being viewing.
control panel >> appearance and themes >> task bar and start menu >> start menu >>
customize >> advanced

remove the checkmark next to "List my most recently opened documents"

* Setup XP Firewall

Block incoming traffic to your winxp box. - Before this change, i scanned my xp box and
found it to have many ports wide open. After this change, I found nothing and xp logged
the attempts in c:\windows\pfirewall.log.

control panel >> network connections >> right click "local area connection" >> properties
>> advanced >> check the box under "Internet Connection Firewall" then choose "settings".

Services Tab - leave all unchecked unless there is a service you are running that people
must be able to access.

Logging Options - Log everything.

ICMP - I left all these unchecked for the time being. (allowing nothing)

(this does not protect you from "Spy Ware". This only stops traffic from coming into
your win-xp box (not all traffic). It does not stop traffic from going out.) If you
need to stop traffic from going out and need a more secure firewall then download a real
firewall like "zone alarm or black ice".

* Setup screen saver password

Setting a screensaver password incase you leave some of that secret pr0n open when you
walk away.

right click on the desktop >> properties >> screen saver >> check the box next to " On
Resume, Password Protect."

If you dont have a password set on your user account, you can do so in control panel >>
user accounts >> change account.

* Setup BIOS password

Setting a BIOS password - We dont want anyone rebooting the computer or trying to sneak
into our pr0n while we are away at school or work.

I cant explain to one how this is done due to the differences between all computers and
how the BIOS settings are entered. If you know what Im talking about then do it. If you
dont know what Im talking bout then learn how to do it. A screensaver password is useless
unless you setup a BIOS password.

* Setup "AfterBios" login password

Setting up the "AfterBios" password. Sometimes bios passwords are easily cracked. This
password will add extra local login security incase your bios pass is crax0red. I dont
know bout you but i love having to type in 3 passwds and a username to login to my box.
Start >> run >> type "syskey" >> choose "update" >> choose "Password Startup" >> enter a
password and choose ok.

* Account Modifications

Renaming and Disabling Accounts for administrator, guest, help_assistant and support.
Right click my_computer >> manage >> local users and groups

rename administrator account
disable guest account
disable help_assistant account
disable support account

* Install a virus scanner.

Install Virus Protection............. (We like our uncorrupted data and trojan free system)

Install a virus scanner. Your firewall might protect your system from unwanted hackers but
what about an unwanted virus or trojan?. I recommend installing a virus scanner such as
"Nortons" or "McAfee".

* Change Login Screen

Change Default Login Screen............ (why do we want to share usernames with anyone?)

Xp uses the "welcome screen" by default. This screen has the names of all accounts on the
system so that the user only has to click on their name and type a password. Come on now....
We arent that damn lazy. If we change this screen to the normal login, then prying eyes
will have to know a username and password to get in. Follow the instruction below to change
this.

control panel >> user accounts >> change the way users log on or off

uncheck the box next to "Use Welcome Screen" and choose "apply options".

* Disable Remote Registry

Disable Remote Registry..........(why would I need to edit my registry remotely anyway?)

right click "my computer" >> manage >> services and applications >> services >> " stop
and disable" Remote Registry.

NOTE: disable any services running in this area that you arent using.

* Disable/Change Auto-Search settings in IE.

Disable/Change Auto-search in Internet Explorer. This is not really a security risk but it
is important to some people that prefer to keep their internet surfing to themselves and
away from microsoft.

Open Internet Explorer >> Click the "search" button >> click the "customize" button >> click
"autosearch settings" >> FOLLOW INSTRUCTIONS BELOW...........

DISABLE: In the "When Searching" drop down menu, select "Do not search from the address bar".
>> click "ok" >> "ok". Type an invalid address in your address bar and see if it
takes you to the msn search page or if it gives a "page not found" error. In this
case, the "page not found" error is what we want.

CHANGE: If you wish not to disable, but you wish to change it to your favorite "google.com"
search page. Instead of following the "DISABLE" instructions, follow the instructions
below. Choose "Google Sites (or whatever you prefer)" from the "choose a search provider
to search from address bar" drop down menu >> click "ok" >> "ok"

XP INSTALL

Steps to Clean Install XP

• Power on the computer. Press the Pause/Break key as soon as you see text on the screen. [If you currently are running in an OS of any flavor,insert XP CD and restart computer. Skip to #3 if system is configured to boot from CD.
  

• XP CD into CD drive. Press ENTER to resume booting from the XP CD.(BIOS must support booting from CD and boot order must be set so CD boots before hard drive. If computer does not support booting from CD go to 2a for floppy install).
  

• Floppy install: Boot from Win98/Me/Special XP install floppy disk with smartdrv.exe added to the boot disk; or the Win XP set of 6 floppy disks.
  

• Look for message "booting from CD" usually located at the bottom of the screen. If you have a factory splash screen, press ESC to unload it.
  

• Floppy install: From the A Prompt; A:\type: smartdrv.exe. then press ENTER. If you are using the XP boot floppy setup disks skip to step #5.
  

• Press any Key when you see the prompt to "Press Any Key"
  

• Floppy install: CD to the location of the CD-ROM drive with the XP setup files; CD to the i386 folder where you will type: winnt.exe to start setup.
  

• Setup will start copying files, if you need to install any third-party or RAID drivers press F6 at this time. the copying of files can take awhile.
  

• Next you will get the option to repair or enter setup, choose to enter setup. Press ENTER. To see images full size, place mouse cursor over image and click/double click or press the left button and open.
  

• Press F8 if you agree to the license.
  

• Setup will scan for previous Windows installations
  

• If you are using the upgrade version of XP on a computer without any version of Windows currently installed, this is where you will replace the XP CD with your qualifying CD, XP setup will scan the qualifying CD and instruct you to replace it with the XP CD to continue XP setup; otherwise, you will not see this screen. Clean install qualifying media can be any of the following Win NT3.51, 4.0, 2000,Win 95, 98, Me. 10. Choose the location to install.
  

• If this is a clean hard drive, you can choose to create a partition in the un-partitioned space. At this point, you can allow Setup to use all the space or set a size for the partition.
  

• If the hard drive or partition has a previous installation of XP you want to remove, choose to delete the partition by pressing "D". You will then be prompted to create a new partition in the empty space. This will remove all data from the delete space.
  

• If you intend to use multiple partitions, or dual boot, this is where you specify the size of the boot partition and or setup location for XP. If you are planning to dual boot XP, I would create a small 100 meg DOS partition for the first primary partition,then an 8 to 10 gig partition for XP. You can partition and format the remaining space after XP is setup from Disk Manager. If you do not intend to dual boot, you can either use all the un-partitioned space,or create an 8 to 10 gig partition for XP and leave the rest free to partition later.
  

• Choose the file system from this screen. If dual booting and you created the small 100 meg partition, make it a fat partition. NTFS is configured at the optimal file size during the initial setup. See this link for more on NTFS
  

• If you have more that one partition or hard drive on your system,make sure you are formatting the correct partition/drive.
  

• Select F to continue.
  

• Setup will show a progress box and reboot when copying files is complete.
  

• When you see the "Press any Key to Reboot" do not Press any Key.If CD boots anyway, remove CD and reboot.
  

• From this point, you will follow the on screen prompts.
  

• If you live outside the US, you will probably need to modify the default settings.
  

• Personalize your XP Enter your Name and Organization.
  

• Enter the Product Key. The Key is located on the back of the CD folder in the Retail, and on a holographic label with the OEM versions purchased with a piece of hardware.
  

• Choose a name for the computer, this should be a unique name for the computer, especially if it is to be connected to a network. In Pro,you are given the option of creating a password or leaving it blank.
  

• Set your Time Zone and Time and Date.
  

• Setup will scan for network.
  

• If detected you will have the choice to choose a typical configuration or custom. Choose typical if you are unsure.
  

• For home you will choose your work group, if a network is already established and you intend to connect to it, use the existing workgroup name, otherwise, I suggest using the default.
  

• For Pro, the same goes for Pro as suggested for Home, but you will have the choice to join a Domain, if you do not have a Domain or do not know leave blank.
  

• Setup will continue and reboot when completed ignore the "Press Any Key".
  

• The loading XP window will now display after reboot.
  

• You will see a change display settings, say yes, and accept the setting if you can see the screen after accepting.
  

• You will see a welcome screen, press next and unfortunately you have to wait for the dialog to finish.
  

• Set up you internet or network connection.
  

• 31. This is the Activate, Register screen. You must activate within 30 days of installing XP, but you do not ever have to register,Registration is completely optional and if you do not register, no personal information will be transmitted during activation.
  

• Setup users screen. Set at least one user for yourself or the person that will be using the computer.
  

• Thank You
  

• Log on to XP and apply Service Pack and Critical updates from Windows Update before installing any software or hardware.
  

• Install your anti-virus software.
  

• Install all applications and setup your email.
  

• Restore from Files and Settings transfer after reinstalling all applications.

Thats all XP installation.we will see others things like securities,applications,and the big thing
"REGISTRY" on later post...see you all...

History of Microsoft Windows

Hai

Here i provide all versions of Micro Soft Windows

windows 1.0

windows 2.0

windows 3.0

windows 3.11

windows 3.11NT

windows 95

windows 98

windows 2000

windows Millenium

windows XP

windows Vista

windows 7

see u in later post...

10 reasons why PCs crash...

Before preceding we must know little about reasons why PCs crash....

Fatal error: The system has become unstable or is busy," it says. "Enter to return to Windows or press Control-Alt-Delete to restart your computer. If you do this you will lose any unsaved information in all open applications."

You have just been struck by the Blue Screen of Death. Anyone who uses Mcft Windows will be familiar with this. What can you do? More importantly, how can you prevent it happening?

• Hardware conflict
  

The number one reason why Windows crashes is hardware conflict. Each hardware device communicates to other devices through an interrupt request channel (IRQ). These are supposed to be unique for each device.

For example, a printer usually connects internally on IRQ 7. The keyboard usually uses IRQ 1 and the floppy disk drive IRQ 6. Each device will try to hog a single IRQ for itself.

If there are a lot of devices, or if they are not installed properly, two of them may end up sharing the same IRQ number. When the user tries to use both devices at the same time, a crash can happen. The way to check if your computer has a hardware conflict is through the following route:

* Start-Settings-Control Panel-System-Device Manager.

Often if a device has a problem a yellow '!' appears next to its description in the Device Manager. Highlight Computer (in the Device Manager) and press Properties to see the IRQ numbers used by your computer. If the IRQ number appears twice, two devices may be using it.

Sometimes a device might share an IRQ with something described as 'IRQ holder for PCI steering'. This can be ignored. The best way to fix this problem is to remove the problem device and reinstall it.

Sometimes you may have to find more recent drivers on the internet to make the device function properly. A good resource is www.driverguide.com. If the device is a soundcard, or a modem, it can often be fixed by moving it to a different slot on the motherboard (be careful about opening your computer, as you may void the warranty).

When working inside a computer you should switch it off, unplug the mains lead and touch an unpainted metal surface to discharge any static electricity.

To be fair to Mcft, the problem with IRQ numbers is not of its making. It is a legacy problem going back to the first PC designs using the IBM 8086 chip. Initially there were only eight IRQs. Today there are 16 IRQs in a PC. It is easy to run out of them. There are plans to increase the number of IRQs in future designs.

• Bad Ram
  

Ram (random-access memory) problems might bring on the blue screen of death with a message saying Fatal Exception Error. A fatal error indicates a serious hardware problem. Sometimes it may mean a part is damaged and will need replacing.

But a fatal error caused by Ram might be caused by a mismatch of chips. For example, mixing 70-nanosecond (70ns) Ram with 60ns Ram will usually force the computer to run all the Ram at the slower speed. This will often crash the machine if the Ram is overworked.

One way around this problem is to enter the BIOS settings and increase the wait state of the Ram. This can make it more stable. Another way to troubleshoot a suspected Ram problem is to rearrange the Ram chips on the motherboard, or take some of them out. Then try to repeat the circumstances that caused the crash. When handling Ram try not to touch the gold connections, as they can be easily damaged.

Parity error messages also refer to Ram. Modern Ram chips are either parity (ECC) or non parity (non-ECC). It is best not to mix the two types, as this can be a cause of trouble.

EMM386 error messages refer to memory problems but may not be connected to bad Ram. This may be due to free memory problems often linked to old Dos-based programmes.

• BIOS settings
  

Every motherboard is supplied with a range of chipset settings that are decided in the factory. A common way to access these settings is to press the F2 or delete button during the first few seconds of a boot-up.

Once inside the BIOS, great care should be taken. It is a good idea to write down on a piece of paper all the settings that appear on the screen. That way, if you change something and the computer becomes more unstable, you will know what settings to revert to.

A common BIOS error concerns the CAS latency. This refers to the Ram. Older EDO (extended data out) Ram has a CAS latency of 3. Newer SDRam has a CAS latency of 2. Setting the wrong figure can cause the Ram to lock up and freeze the computer's display.

Mcft Windows is better at allocating IRQ numbers than any BIOS. If possible set the IRQ numbers to Auto in the BIOS. This will allow Windows to allocate the IRQ numbers (make sure the BIOS setting for Plug and Play OS is switched to 'yes' to allow Windows to do this.).

• Hard disk drives
  

After a few weeks, the information on a hard disk drive starts to become piecemeal or fragmented. It is a good idea to defragment the hard disk every week or so, to prevent the disk from causing a screen freeze. Go to

* Start-Programs-Accessories-System Tools-Disk Defragmenter

This will start the procedure. You will be unable to write data to the hard drive (to save it) while the disk is defragmenting, so it is a good idea to schedule the procedure for a period of inactivity using the Task Scheduler.

The Task Scheduler should be one of the small icons on the bottom right of the Windows opening page (the desktop).

Some lockups and screen freezes caused by hard disk problems can be solved by reducing the read-ahead optimisation. This can be adjusted by going to

* Start-Settings-Control Panel-System Icon-Performance-File System-Hard Disk.

Hard disks will slow down and crash if they are too full. Do some housekeeping on your hard drive every few months and free some space on it. Open the Windows folder on the C drive and find the Temporary Internet Files folder. Deleting the contents (not the folder) can free a lot of space.

Empty the Recycle Bin every week to free more space. Hard disk drives should be scanned every week for errors or bad sectors. Go to

* Start-Programs-Accessories-System Tools-ScanDisk

Otherwise assign the Task Scheduler to perform this operation at night when the computer is not in use.

• Fatal OE exceptions and VXD errors

Fatal OE exception errors and VXD errors are often caused by video card problems.
These can often be resolved easily by reducing the resolution of the video display. Go to

* Start-Settings-Control Panel-Display-Settings

Here you should slide the screen area bar to the left. Take a look at the colour settings on the left of that window. For most desktops, high colour 16-bit depth is adequate.

If the screen freezes or you experience system lockups it might be due to the video card. Make sure it does not have a hardware conflict. Go to

* Start-Settings-Control Panel-System-Device Manager

Here, select the + beside Display Adapter. A line of text describing your video card should appear. Select it (make it blue) and press properties. Then select Resources and select each line in the window. Look for a message that says No Conflicts.

If you have video card hardware conflict, you will see it here. Be careful at this point and make a note of everything you do in case you make things worse.

The way to resolve a hardware conflict is to uncheck the Use Automatic Settings box and hit the Change Settings button. You are searching for a setting that will display a No Conflicts message.

Another useful way to resolve video problems is to go to

* Start-Settings-Control Panel-System-Performance-Graphics

Here you should move the Hardware Acceleration slider to the left. As ever, the most common cause of problems relating to graphics cards is old or faulty drivers (a driver is a small piece of software used by a computer to communicate with a device).

Look up your video card's manufacturer on the internet and search for the most recent drivers for it.

• Viruses
  

Often the first sign of a virus infection is instability. Some viruses erase the boot sector of a hard drive, making it impossible to start. This is why it is a good idea to create a Windows start-up disk. Go to

* Start-Settings-Control Panel-Add/Remove Programs

Here, look for the Start Up Disk tab. Virus protection requires constant vigilance.

A virus scanner requires a list of virus signatures in order to be able to identify viruses. These signatures are stored in a DAT file. DAT files should be updated weekly from the website of your antivirus software manufacturer.

An excellent antivirus programme is McAfee VirusScan by Network Associates
( www.nai.com). Another is Norton AntiVirus, made by Symantec ( www.symantec.com).

• Printers

The action of sending a document to print creates a bigger file, often called a postscript file.Printers have only a small amount of memory, called a buffer. This can be easily overloaded. Printing a document also uses a considerable amount of CPU power. This will also slow down the computer's performance.

If the printer is trying to print unusual characters, these might not be recognised, and can crash the computer. Sometimes printers will not recover from a crash because of confusion in the buffer. A good way to clear the buffer is to unplug the printer for ten seconds. Booting up from a powerless state, also called a cold boot, will restore the printer's default settings and you may be able to carry on.

• Software
  

A common cause of computer crash is faulty or badly-installed software. Often the problem can be cured by uninstalling the software and then reinstalling it. Use Norton Uninstall or Uninstall Shield to remove an application from your system properly. This will also remove references to the programme in the System Registry and leaves the way clear for a completely fresh copy.

The System Registry can be corrupted by old references to obsolete software that you thought was uninstalled. Use Reg Cleaner by Jouni Vuorio to clean up the System Registry and remove obsolete entries. It works on Windows 95, Windows 98, Windows 98 SE (Second Edition), Windows Millennium Edition (ME), NT4 and Windows 2000.

Read the instructions and use it carefully so you don't do permanent damage to the Registry. If the Registry is damaged you will have to reinstall your operating system. Reg Cleaner can be obtained from www.jv16.org

Often a Windows problem can be resolved by entering Safe Mode. This can be done during start-up. When you see the message "Starting Windows" press F4. This should take you into Safe Mode.

Safe Mode loads a minimum of drivers. It allows you to find and fix problems that prevent Windows from loading properly.

Sometimes installing Windows is difficult because of unsuitable BIOS settings. If you keep getting SUWIN error messages (Windows setup) during the Windows installation, then try entering the BIOS and disabling the CPU internal cache. Try to disable the Level 2 (L2) cache if that doesn't work.

Remember to restore all the BIOS settings back to their former settings following installation.

• Overheating
  

Central processing units (CPUs) are usually equipped with fans to keep them cool. If the fan fails or if the CPU gets old it may start to overheat and generate a particular kind of error called a kernel error. This is a common problem in chips that have been overclocked to operate at higher speeds than they are supposed to.

One remedy is to get a bigger better fan and install it on top of the CPU. Specialist cooling fans/heatsinks are available from www.computernerd.com or www.coolit.com

CPU problems can often be fixed by disabling the CPU internal cache in the BIOS. This will make the machine run more slowly, but it should also be more stable.

• Power supply problems
  

With all the new construction going on around the country the steady supply of electricity has become disrupted. A power surge or spike can crash a computer as easily as a power cut.

If this has become a nuisance for you then consider buying a uninterrupted power supply (UPS). This will give you a clean power supply when there is electricity, and it will give you a few minutes to perform a controlled shutdown in case of a power cut.

It is a good investment if your data are critical, because a power cut will cause any unsaved data to be lost.

Hai Friends

Hai Friends

I am here to provide all details about windows operating system. Please join and share
what you know about operating system.

Thank You all